I've got the problem that the installer apparently doesn't react neither to ControlClick() nor to Send("!w") or Send("!W")
But I get the control handle and even its text. Here the script for automating the installer.

As you see from my first code snippet currently i have compiled the control script with #RequireAdministrator because i thought maybe the main script can't interact with it because of running as regular user.

I have also tried including the script in the main script without an additional *.exe

I'm testing it on a Windows 10 build 1903

I've searched the forums for a while and checked the FAQ. Either I could not find hints towards my problem or they were not apparent to me.
I hope you can give me a pointer in which direction i should continue looking to find an explanation for this behaviour.